Reference

Returns the number of key-value entries in a map.

Tests whether a string matches a regular expression, returning true or false.

Returns the largest value in a sequence of comparable items, optionally using a named collation for string comparison.

Returns the smallest value in a sequence of comparable items, optionally using a named collation for string comparison.

Extracts the minutes component from an xs:time value as an xs:integer in the range 0–59.

Extracts the month component from an xs:date value as an xs:integer in the range 1–12.

Returns the qualified name (including namespace prefix, if any) of a node as it appears in the source document.

Returns the namespace URI of a node's expanded name, or an empty string if the node has no namespace.

Returns true if an element node is schema-validated and marked as nilled with xsi:nil="true", otherwise returns false.

Returns the name of a node as an xs:QName value, capturing both the namespace URI and the local name.